Sound-box.



P. WEBER.

SOUND BOX.

APPLICATION FILED MAR. s. 1911.

1 1 97,782 Patented Sept. I2, 191%.

PETER WEBER, OF ORANGE, NEW JERSEY.

SOUND-BOX.

Specification of Letters Patent.

Patented Sept. 12, 1916.

Application filed March 8, 1911 Serial No. 613,117.

J. i/ all W/w/I? ii: may concern:

lie it known that I, Pnrnn WEBER, a citizen oi' the United States, and aresident of Orange. in the county of Essex and State of New Jersey, haveinvented certain new and useful Improvements in Sound-Boxes,

of which the. following is a description.

My invention relates to phonograph reproducers, and my object is toprovide an improved reproducer wherein the stylus supporting member hasgreat freedom of movement in tracking the grooves of the soundprovidedwhich renders it unnecessary to move any parts other than the stylussupporting member itself, when said member is oscillated laterally tothe record groove in tracking the same. Furthermore, means are providedby my invention for locating the stylus centrally of the record groove,after a deviation from this central position in tracking the groove.

Other objects of my invention are the provision of improved detailsofconstruction and combinations of parts hereinafter more fully describedand claimed,

In order thatmy invention may be more clearly understood, reference ishereby made to the accompanylng drawings, llustrating a preferred formthereof, and in which:

Figure 1 is a central vertical section ofa reproducer embodying myinverttion, some of the parts being shown in side elevation; Fig. 2 is aview similar to Fig; 1 of a modification; Fig. 3 is a fragmentary bottomplan view of the device illustrated in Fig. 1, the stylus supportingmember being shown in its central position; and Fig. 4 is a similar viewof the parts shown in Fig.3, the stylus supporting member being. showndeviated from its central position.

In all of the views, corresponding parts the same reference nu;

are designated by merals.

Referring to the drawing, the diaphragm 1 is secured to a body member 2providedffl'heldfrom downward movement therein by l with an annularflange 3 which is securely held within a tubular member 4.

represents a pivot whereby the member 4 and the parts secured thenetoare con nected 'for vertical movement to the tone arm 6 of thephonograph.

In order to facilitate the movement of the reproducer with respect tothe supporting arnrand at the same time insure a good con nectlonbetween these parts, a socket 7 is provided in the end of the arm 6 andthe member 1 is provided with a spherical surface 8 engaging the Wall ofthe said socket.

As shown in F ig. 1, the flan e 3 is seated in a recess 9 in the member4, and a passage of substantialb uniform diameter extends from theflange 3 into the arm 6.

The body 2 comprises a member 19 and an annular member 11 threaded tothe peripheryfiof the member 10, the latter being {no vided with aconical forwardly extending surface 12 adapted to form a tapering soundchamber in the rear of the diaphragm. Two annular gaskets 13, 13 arepiaced on' cpposite faces of the'diaphragm at the. periphery thereof,andtogetlier with the diaphragm areclamped between the member 10 and theflange 1% on the member 11.

Secured to the lower portion of theoutcr curved surface of the member 11is a bracket provided with parallel lngs 16, 16'', be tween which thearm 17 projecting substan tially at right angles from the body of theelongated lever 18 is pivotally mounted by means of a pivot 19.

Referring to Fig. 1, 20 represents a projection extending from thecenter of the diaphragm, and secured thereto by a screw or othersuitable fastening means 21. .This projection is provided transverselythereof With a vertical opening flaring outwardly from the center toboth of its extremities, the long arm of the lever 18- being slidably'mounted in the said opening; By the employment of a connection of thistype'between the lever 18 and the diaphragm, the free backward andforward vibration of the v diaphragm is not disturbed by the angular ityof the lever 18 with respect thereto. in the form of my invention shownin this figure, the lever 18 is made tubular and the stylus supportingarm 23 is pivotally con nected therewith by a shaft 24 rotatably mountedin the opening in said lever and sound a set screw secured in the end ofsaid shaft and engaging the top of the said lever. The arm 15 preferablysecured to the shaft 24 by a set screw 26 and carriesin its forward enda stylus 27 held in 11911;; moved laterally by the record groove in "hereproduction of a record, a stylus mounting having but little inertiaand great freedom of movement is obtained.

Referring, to Fig. 2, the lever 18 is provided at its upper end with arearwardly turned portion 29 secured to the diaphragm 1. In thismodification, the arm 23is pivotally mounted on :rset screw or similarsupport 30 screwed into the lower end of the lever 18 in alinement withthe long arm of the said lever, he head of said set-screw engaging thelower surface of said arm. The stylus 27 is secured to the arm 23 as inthe form of my invention shown in Fig. 1.

In both 'of' the modifications hereinbefore described, a spring 32 issecured toand extends rearwardly from the stylus supporting arm, theouter end of this spring being slidably engaged between the opposingeonvex surfaces forming the walls of the notch 33 in the lug 34 whichextends downwardly from the bracket-15., Movement of the stylussupporting arm to either side of its normal axial position bends thespring 32, as drown, for example in Fig. 4, so that as soon as thedeviating force is removed from the said arm, the latter is returned bythe spring to its normal position. A stop 35 on the lower end of thelever 18 (or 18') is-adapted to be engaged by the rear vertical edges ofthe stylus supporting arm to limit the oscillation of said arm toprevent breaking of the spring 32 or removal of the same from the notchIt is understood that my invention is not limited to the precise deviceor cm-istruction shown, but may be varied within the scope of theappended claims without departing from the spirit of ray-invention.

Having now described my invention, what I claim as new and desire tosecure by Letters'Patent of the United States is as follows:

the center of said diaphragm, said lever.

having an opening extending longitudinally In a sound box, thecombination of a 7.0

diaphragm, a support therefor, a lever fulcrumed on said support andconnected with the center ofsaid diaphragm, said lever having an openingextending longitudinally therethrough, a shaft rotatably mounted in saidopening, a, stylus arm secured to said shaft, and yielding means forcentering said. arm, substantially as described.

3. In a sound box, a diaphragn'i, a sup port therefor, a projectionextending -from the renter-.of said diaphragm and provided with atransverse opening flaring from the center to both of its extremities,and a stylus lever fulcrumed on said support, and extending slid-ablythrough said opening, sub- 35' stantially as described.

4. In a sound box, the combination of vibratory means, a supporttherefor, a stylus arni connected with said means and adapted to vibratethe same, said arm being free to oscillate laterally with respect tosaid vibratory means in a plane substantially at right angles to saidmeans and Without imposing stress thereon, yielding means for centeringsaid arm, and a stop to limit the oscillation of said arm, substantially"as de-. scribed.

5. In a sound box, the combination of vertically disposed vibratorymeans, a support therefor, a lever connected with said viln-atory'meansand pivotally mounted on 's'aidsupport for. movement about a horizontalaxis to vibrate said means, and a stylus carrying member supported bysaid lever so as to oscillate laterally with respect there- 10:;

to about an axis at an angle to the hori 'Zontal and in a plane at anangle to said vibratory means without imposing stress thereon andwithout moving the stylus from operative position, substantially asdescribed.

(5. In a sound box, the combination of vibratory in ians', a supporttherefor, a stylus arm connected with said means and adapted to vibratethe same, said arm being arranged to oscillate freely in'a plane at anangle to said-vibratory means without im;.. posing stress thereon andwithout moving the stylus from operative position, and

yielding means for centering said arm, sub- 12a stantially as described.

- 7. In a sound box, the combination of vibratory means, a supporttherefor, a lever pivoted on said support and connected with saidvibratory means, a stylus arm supported by said lever so as to freelyoscillate late ally with respect thereto in'a plane at an angle to saidvibratory means Without imposing'stress thereon and without moving thestylus from operative position, and

' through said lever,

yielding means for centering said arm, substantially as described.

8. In a sound box, the combination of member supported by. said leverfor pivotal movement in a plane at an angle to the Vibratorynneanswithout moving the stylus from operative position, said member havingconnection with said vibratory means substantially as described.

9. In a sound box, the combination of vibratory means, a supporttherefor, a lever pivoted on said support and connected with saiddiaphragm, and a stylus carrying member supported by said lever so as tobe free to oscillate about an axis at an angle to the axis of the pivotof said lever and in a plane at an angle to said vibratory means Withoutimposing stress thereon and Without moving the stylus from operativeposition, substantially as described.

10. In a sound box, the combination of vibratory means, a supporttherefor, a lever pivoted on said support and connected With saiddiaphragm, and a stylus carrying member supported by said lever so as tobe free to oscillate in a plane at an angle to said vibratory meanswithout imposing stress thereon, said member having connection with said"ibratory. means through said lever, substantially as described.

This specification signedand witnessed this 7th day of March, 1911.

, PETER WEBER. Witnesses: 'FREDERIGK BACHMANN.

Anna" R.

